题目内容
(请给出正确答案)
[判断题]
预拌砂浆中不可掺入保水增稠材料、外加剂等。()
如搜索结果不匹配,请 联系老师 获取答案
第2题
A.100S
B.120S
C.150S
D.180S
第3题
A.100S
B. 120S
C. 150S
D. 180S
第4题
A.30s 60s
B.60s 120s
C.120s 180s
D.180s 240s
第5题
A.30s 60s
B.60s 120s
C.120s 180s
D.180s 240s
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!